Nut-tightening device.



UNITED N STATES PATENT oEEioE.,

JACOB E. MYERS, F SEATTLE, WASHINGTON.

Nu'r-TIGH'ranma DEVICE.

Application tiled my 27, 1918.

To @ZZ vw hom it may concern Be it known that LJACOB E. MYERS, a citizen of the United States. and resident of Seattle, in the county of King and State of VVashingtomhave invented certain new and useful Improvements in Nut-Tightening Devices, of which the following is a `clear and exactspecification.

This invention relates to improvements in uut tightening devices and the object of this improvement is to provide a strong and eli` cient nut tightener that may be pneuinatt cally operated and that will strike a blow that tends to' drive the plates'or members through which a bolt passes' together atthe same time that it exerts a turning force on the nut.

A further object is to provide a tool of this class wherein the direction of application ot the hammer blows may be varied from van angle where substantially the entire force is exerted to turn the nut to a position where substantially the entire force is exerted ,to drive the plates or members through which the bolt passes together.

In tightening nuts on bolts that are used for bolting two or more plates or pieces ot metal together it is often advantageous` to strike the bolt or the plates and drive them together at the same time that a turning force is being exerted to screw on the nut.

This nut tightening device is constructed so that the blows of a pneumatic hammer or similar tool may be utilized to turn the nut on the bolt and at the same time to drive the plates or members through which the bolt passes together thereby making the nut turn more easili7 and making it possible to screw the nut down more tightly without injuring the thread of` the bolt or nut than' would otherwise be possible.l

`"[n. the drawings Figure` 1 is a view in side elevation of n nut tightening device constructed in accordance with this invention; Fig. 2 is a plan view of the same: Fig. 3 is a View in horizontal section substantially onbroken line 3--3 of Fig. 41. certain parts being shown in elevation; Fig. 4 is a view in vertical section substantial!iv on broken line 44 of Fig. 1; and Fig. V5 is an inverted plan view showing the nut en agingportion of the device. A l l eferringl to the drawings throughout which like reference numerals designate like parts the niuneral 6 designates .a cylindrical base member that is provided on tsbot- Specification o( Letters Patent.

ratentedivray 6, 191e.

Serial No. 236,719. l

tom side with a' centrally arranged recess 7 otsqunre or other regular shape that is adapted for the reception of a nut or for the reception oit a bushing 8 that in turn isprovided with a central opening l()` which may be of square, hexagonal, octagonal or other siz'n'lar shape andis adapted to be placed over a' nut that is to be turned.

The bushing 8 may be removably held in place by a set screw l0 so that it may be taken out and replaced by a bushing haw ing u nut-receiving recess of different. size. ln practice a different size of bushing will necessarilybe provided for each size of nut that the tool is Vto be used upon exceptr the largest size which may fit directly1 Within the opening T itldesired without the use of a bushing.

11 is a tubular shank' that is integral; or otherwise rigidly connected withjtlie top side of the base in aconcentricll position,

and projects outwardly at right angles thereto thereby forming a stem or support for the remaining parts of the tool. i V

The shank 11 yis necessarily hollow or tubular so .that the end of a bolt may project vvratchet teeth'each preferably having one face arranged .at substant-iallv` right angles to the `plane of they sur-.face of the member on which thc v nreforined and the other facearranged 'at other than a right angle thereto so4 that when the driving member 14 is tur'nedk in a clockwise direction,V as viewed in the drawings. itwill rotate the basemember -along with it and when thedriving member is turned in the opposite direction it will tend to ride over the' teeth on the base member` in well known manner without turning the base4 n'iember.

The driving member 14 is rotatably mounted on theshank 11 in concentric relation thereto and is provided -on its top surface with a rounded lug 15 that is preferably constrlurtedI integral therewith andupon which the blows of the ,hammer may bedelivered. 16 is' la. housing or, casing thatlsurrounds the upper portion of the shank 11 as more clearly shown in Figs'. 3 and 4 and is fecessed on one side as at 17 so that it lwill fit over the lug 15 and sufiieient room will be screwed therein to form adjustable stops for the ends of the springs as more clearly The hammer tool 18 is slidgrbly disI o sed 37 is appmpression spring that is disposed within a sleeve or guide 20 thtlis pro dedltwithin ai recess 38 in the housing 16 and is with an outwardly extending lug 21 theend adapted to have one end abutugainst n4 on a flat extension 23 thatjs formed, Q n.. one side of the housing 16. i' i The lip 2l is secured. on the; stud by .e nut -24 and'j's '3 9 rrengedesftp permitthe-guide -20 to be oillated through, en .angle sub- Astalntizilly;'nii'mtydegrees.

21l is provided'Withl a'.. l 1ooki'shepfefd .member,

, 25'fthetfit's over. am annuler. track section 26 that) is forn'iedonth'e [housing 16 midthereby 4 ,co'nj uneton withv 'they pvotv I22 to Vsecure the' 1,uid'e` 20, .firinly t'o-,Qthev housing 16 20 endet; the' seine( time [permit oseilletionot lthe guide-20'. through .an-.angle of substanif-tially f ninety degrees lviith respect to v.the

helrece'ss orbore 1n the :guide 204 wi-tlun that the youtere'nd -of the hani1n'er.too l. will tie 3 upwaflrdlyl substantially p-rllelf therewith.

'lllifhemnier tool 18 is Llgirovided with :t

l endtif'the guidef-'SleevQgQLa-ndfliiiiit the iniverd moyement of the' tool.

Th' i1 ppenend'o'f the oas'ng 1.6.1011 the side i the other portion und is provided n'ith ,un internal semi-circuler recess 30 that extends substalntillyhelf Way around the stem 11 rik-1,1 vthenfthezliannneitoolfisturned t epdfthe other end abut against a. set screw tlireiideduplugO that is screwed into the outer end of the recess 38. The plug-.40 :iformsameanslof adjusting the compression -iffjthehspring' 37 and n iay be quickly end ea si l';;ie1no \ed-vto perrilitthespring to be P ,take'nout ifl'desired.

.h'j After...thelug has -been driven foi-wurd by blow'of'the hammer tool 18,- the force Aotthe spring '37 will move it.; ieerwuidly und .,;Ca.use theteeth on the cliiyiiiggnember to .f ride over ltlife teeth on the-bese' member. n The .tQo1 ;mz ty be provided with :i handle '241 trlitttg'-r'naiA be formed integral with the euslindY. nat'y. extend outwardly aint upiviirdly'jrointhe buse portion K -thereof :ie inore'elelljshowninfligs. Zend il.

This toollfis particularly well ude'ptedtmtightening the nuts on bolts that. :ure used foi; ,boltingplutes together: in the4 Construcltioiin'flergie steel ships but'it is obvious that it z tdvantgeously. ,used in przieti ll \j ,zin-'y eon'struetion where bolts und ,1'1ut,\ 'are flnloperzition the bushing` 'in the buse nier:-

Gffis. pla-ced over zt nut that 'is to br tightened, the outer end of the hammer tool 1 18 isinserted in the end of :L pneunmtir.l hruniner of Well known `forni, (not show-n) end actuated,` ,byffthe' pneumatic." hamnlier to deliver blows on theflug-l. ililieii :the hummer tool strikes the lug 15 the driving nieni beiv 154, base mem-ber, andnut in the recess 1Q Will'zill be nioved in u clockwise direetion y`tl1roiigh 1an -.angle Vequal topf 'greater' than vthe disttnee :between two n djeeent 'ratchet teetlrand` the; spring 3?? will be A. compressed soon s lsgthe force. of thefhainnier blow is `spent4 the; foreef of the spring noting: egainst the' Iliig .15 nti-ll4 rotate the dri v i n member L1. beek into :the positionsho n ,fin

lli.

is' 'deliveredoi' the :lug 15 it will not only tend to drive the members 1&1 .and 61u'rouud Ain a olookwise :direction but will also toit-l to! drive5down'wardly or e1'1d\.v.iseou such iimbersthereb-y tending to drive the platre through which the bolt extends togethernt lll le same time that it tightens the nut on the rDhe hanimer tool 18 may be oscillated from'a position substantially parallel with the flat-faces of the members Hand (i to a position substantially at right angles thereto thereby varying the angle at which the blow of the tool is delivered and conse` quently varying thc ratio between the effective turning force and the eii'ective driving force that is derived from each' blow.

For instance if the tool 18 is in a substair tially horizontal position as shown in Fig. 1 almost the entire force of the blovvwill-be exerted'to turn the members 14 and'6 while if the tool 18 is turnedinto a substantially vertical position practically the entire 'force ofthe blow will be exerted as a drivingl force on the plates or members through which the bolt passes.

Itis obvious that changes in the formyof construction and arrangement of the various partsf this device may be resorted to within the scope of the following claims. iWhat I claim and desire to protect by Letters Patent is y 1. A' nut tightening device of theclass' described comprising a socket adapted to fit over a nut, and means for delivering blows eccentrically on 4said socket and at suchfan angle that each blow tends to drive downwardly, at lthe Sametime exerting a turning force on said socket.

2. A nut tightening device ofthe class described comprising a socket adapted 'to `fit over a nut, thefsurrounding edges Ofsaid socket being adapted'to engage the' surface against which said nut is to be tightened, and a hammer tool arranged to deliver blows ecccntricallv on said socket at an angle that tends to drive downwardly and at the r same time tends to rotate said socket.

3. A device of the class described comprising a base member having a socket 4adapted to fit over a nut, and engage with the surface against which said nut is to be tightened, a driving member associated there with, a housing, a hammer tool connected with said housin and adapted to be turned into various angu ar positions to strike blows on said driving member that tend to drive endwise and at the same time turn said driving member and ratchet means for converting` oscillating movement ot said driving member into rotary movement of said base member to trn a nut.

4. A nut tightening device comprising a base member having a centrally arranged socket adapted to fit over a nut, ahammer tool arranged to deliver blows eccentrically on said base member at an angle that tends to drive endwise and at the same time rotate said base member, and spring actuated ratchet means interposed between said base member and said hammer tool whereby said base tubular stem concentricall 'with said ratchet teeth on sai Imember may be rotated by blows from said hanlimer tool'without rotating said hammer 5. Anut tightening device comprising a base member having a centrally arranged socket adapted to t over a nut, a driving member rotatably mounted on the top of said base member, ratchet means for converting oscillating motion of said driving member into rotary motion of said base member, and a hammer tool adapted to be operated neumatically to deliver blows eccentrically on said driving tool and at an angle that will tend to drive endwise on said driving memer and also tend to turn said driving mem- 6. A device of the class described comprising a base member having a socket on one side adapted to fit over a nut, a concentric hollow stem rojecting outwardly from'the other side of said base member, a driving member mounted on said hollow stem, ratchet means for converting oscillating movement of said driving member into rotary movement of said base member, a housing mounted on -said stem, a hammer tool mounted on said housing and adapted to be turned into different annular positions 'to deliver blows on said driving member that tend to turn said driving member and at the same time to drive it endwise, and a spring for moving said driving member in a reverse direction to that in which it is moved by said hammer tool.

7. A nut tightening device of the class de scribed comprising a cylindrical'base member having a centrally arranged socket, a bushing adapted to be inserted in said socket said bushin :being adapted to lit over a nut, ratchet teei on the top side of said base member, an upwardly projecting cylindrical secured tc the top side of said base mem er, a cylindrical driving member mounted for rota-tion on said stem, ratchet teeth on the bottom side of said driving member and adapted to en ge base mener an eccentric lug on the top side of said driving member, a housing rotatably' mounted on said stem, means for preventing verti- 115 cal movement of said housing on said stem, a tool guide pivotally secured to said housing and adapted to be oscillated through an angle of Substantially ninety degrees, a hook shaped extension on one side of said tool 120 guide, an annular track way on saidliousing over which said hook shaped extension engages said trackway cooperating with the pivot of said tool guide to support said tool guide for oscillation, atool reciprocable in said 1 2 5 tool guide and adapted to strike blows on said lug to drive downwardly and at the same time exert a turning force on said base membei', and a sprin adapted to move the said driving member ack toward said tool after 130 'teeth-nn fguide and .-adapted to. strike' blows fthe force cfy ,aachlblow is .spentethe ratchet thefsaiddvingmembemriding-'over the ratchet teeth on sa1d base member.

-;8. Afnut tightening deviceof thef'class de- ;,scribed :comprising a ylindraalibese meer aber fh-aving a .centrally arranged socket, Stdapted -to fit over aunut, .ratchet teeth on the-top side Tof .said base member, an upprojecting cylindricalhtubular stem wncentreellyesecured to theitop side ofsaid base member, a. cylindrical y.driving 1 mel'nber .mounted for :.rotation on .said stem, ratchet :teeth on @the ,bottom sidefe said driving member and adapted .-toengage-fwith said ratchet-teeth. on ,said hase member, =an eccentric lug on the top side of said driving member., a ,housing rotatably mounted on said stern, ,aetool guide pivoteily secured-to said housing, a tool .reciproeable 4in lsaid tool en said-lug todli-velfdovvnwardly and at the same-time exert a'tmning jfforce on saidwha-Sc'ineinber .the ,angle atf-which said blows are delivered Aieperid-ingon the-position into which .said

4teelis moved, va. compressionspring ,interposedrbetween Sfidhousingendei lug to vmove asa-id driving -.niember toward :said -tool ,agternthe impact. ef each blow is spent, said ratchetteeth on said. dri-vingmember riding overHthe ,ratchet teeth onsaid base member, A.and,= s prings interposed between said housandthe top surface of. saidfdniving mem- -ber to; yieldinglyhold said driving-member in contact with said base member.1

I9. .Agint,tightening-.device ofthe class deseribedfcomprising a cylindrical :base member ,having-a centrally f arranged socket, a bushing adapted to beinserted in-said socket said .bushing being adapted toi tit overa nut,

.QQPieimLthis .patent may,be.,b1;a1ned .tonvefcents each, byfaddi'essng the .ratchet teeth on the top side of said base member, an upwardly projecting cylindrical tubular stem concentrically secured to the top Side of Said base member, a cylindrical driving member mounted for rotation on said stem, ratchet teeth on the bottom side of said driving member and adapted to engagew-ith said ratchet teeth on said base member,-an eccentric lug on the top side ,of said driving member, a housing rotatably mounted on said stem, :means for preventing vertical movement of -said housing on said stem, a

.said tool 4isrnoved, a compreion :spring interposed-between. said housing :and said lug to `movesaid dri-ving membertoward said .tool-after.theimpact of each blow-'is spent ,saidgratchet .teeth on said driving lmem-ber riding over thefratchetteeth on "said base of Said tool member. and springs interposed between-said housing andtheitop ,surface of said driving member to yieldingly hold said dmv-ing. member in contact with said base member.

Signed at Seattle, VVashing-wn, this` 20th day of April, y1918.

- JACOB E. MYERS.

Commissioner. of Intenta, 

